Accession Number : ADA111818

Title :   Failure Analysis of Epoxy-Lined Asbestos-Cement Pipe.

Descriptive Note : Final rept.,


Personal Author(s) : Smith,Alvin

PDF Url : ADA111818

Report Date : Dec 1981

Pagination or Media Count : 31

Abstract : This report presents the findings of an investigation into the causes of failure of epoxy lining in asbestos-cement sewer pipe used in certain Middle East construction projects. The asbestos-cement pipe passed all tests performed on it to see whether it met the original specifications. The epoxy lining did not meet the requirements in some samples. The report concludes that the lining failures occurred because of the following factors: (1) Poor proportioning of curing agent to epoxy resin, mixing, and curing, which led to residual stresses, large amounts of swelling, softening, and strength loss both internally (cohesively) and at the adhesive bond (adhesively). (2) Environmental effects (high soluble salt content of the soil), and possible aggressiveness of the materials carried in the pipe. (Author)

Descriptors :   *Water pipes, *Epoxy coatings, Protective coatings, Linings, Asbestos, Cements, Failure(Mechanics), Laboratory tests, Mechanical Properties, Water analysis, Curing agents

Subject Categories : Polymer Chemistry
      Ceramics, Refractories and Glass
      Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE